Thirds to william keely and william i



IRVIN K. ALTHOUSE, OF READING, PENNSYLVANIA, ASSIGNOR OF TWO- THIRDS TO WILLIAM KEELY AND WILLIAMI. OLOUS, OF SAME PLACE.

SPLIT iPULLEY.

SPECIFICATION forming part of Lettersjlatent No. 535,654, dated March 12, i895.

v Application filed December 3,1894. Serial No. 530,681. (Model.)

To @ZZ whom it may col/cerrar Be it known that I, IRVIN K. ALTHOUSE, of the city of Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Split Pulleys; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates particularly to that class of split pulleys in which a small segment of the rim sufficiently large to permit the passage of the shaft, is made removable; and it consists mainly in certain improvements relating to the securing of said removable segment, together with the main portion of the pulley, to the shaft.

The invention is fully described in connection with the accompanying drawings and the novel features are specifically pointed out in the claims. y

Figure l is a front elevation of a pulley embodying my improvements. Fig. 2 is a cross section of the same. Fig. 3 is a view of the rim showing the mortise connection of the removable segment. Fig. 4 shows the removable segment separately. Fig.- 5 shows one of the clamping boxes in three views. Fig. 6 shows one of the hub sections in two views and Fig. 7 shows the clamping screw.

A represents the rim of the main portion of the pulley, and C C and C the fixed plate or spokes connecting the rim with the wooden portion of the hub. The removable segment E, which is mortised into the main rim as indicated at K, has a radial arm extending between the fixed spokes O C to which, in case of a sufficiently large pulley it may be secured by a bolt G in addition to the means hereinafter described. The inner end of this segment arm is provided on either side with a projection F, the purpose of which will be described later.

Upon each face of the wooden portion of the hub are fastened metal hub sections B B by means of bolts D, an opening being formed between the sections on either face of the pulley to receive removable clamping boxes H. These boxes are provided with offsets h formed at an acute angle with the sides of the boxes which offsets are adapted to engage undercut shoulders J on the opposing edges of the hub section B, when the boxes are inserted axially in the space between the sections. The boxes 'are screw threaded to receive set screws I, the ends of which are pressed against the shaft in securing the pulley to the latter; and they are also formed with pockets or recesses h extending from the rear face of the box outward and somewhat tapering. This pocket is adapted to receive the projection F on the inner end of the segment arm, so that when the box is forced tightly against the segment arm the latter will be so firmly secured as to permit the bolt G to be entirely dispensed with in the case of smaller diameter pulleys where it cannot be conveniently used.

In pressing the set screw against the shaft, the outward strain on the box, which is taken by the shoulders J on the opposing hub sections, does not tend to spread the latter apart, but owing to the angle of the opposing off sets and shoulders assists in maintaining a firm connection of all the parts. l

Clamping boxes having different bores may be readily substituted to suit different sizes of shafting.

What I claim is;

1. In a split pulley, the combination, with a removable rim segment provided with a radial arm having projections F at the inner end thereof, of removable clamping boxes engaging the hub of the pulley and provided with pockets adapted to engage said. projections and hold the removable segment in place, substantially as and .for the purpose set forth.

2. A split pulley having a removable rim segment with radial arm, hub sections B 9o bolted to the main portion of the pulley` and formed with shoulders J, four clamping boxes H, having offsets engaging opposing hub sections, andtwo of said boxes engaging the inner ends of said segment arms, and clamping 95 screws passing through said boxes to engage the shaft, substantially as and for the puri pose set forth.

In testimony whereof I aiix my signature y in presence of two witnesses.

IRVIN K. ALTHOUSE.

Witnesses P. H. REINHARD, B. F. HEAN. 

